The Research and Mechanism of Extracting Vitamin B6 Using Aqueous Two-Phase Systems

Table 8

Parameters of equation (9) for the mixture of polyethylene glycol/isopropyl alcohol + ethanol + salt (Na₂CO₃/Na₂SO₄) + water ATPSs at different temperatures.

System	T (K)	k	β	R^2	Sd^a
Polyethylene glycol + ethanol + Na2SO4	308.15	4.1764	0.0034	0.9975	0.001
	318.15	3.2737	−0.0532	0.9956	0.001
	328.15	4.6725	0.1531	0.9985	0.002
Isopropyl alcohol + ethanol + Na2SO4	308.15	5.7471	0.0941	0.9956	0.003
Isopropyl alcohol + ethanol + Na2CO3	308.15	3.5108	−0.0592	0.9936	0.001

^aDefinition is given in Table 7.